It would help a lot to have the possibility to see whenever needed who was the person who last modified a Nintex form for O365.
At this moment this detail are not available but the date only.
Knowing the who change it would help us a lot when debugging an issue as we would be able to collaborate with that person and find the needed info.

Currently, Nintex Form unable to display the historic version of the SharePoint List Item. Nintex Forms can only display the most recent version of the item the user has access too.

When using Nintex Form, the user should be able to get the item historic version and not the most recent one.

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Missing the ability to add buttons.

Also ability to customise buttons Save and Continue or Save and Submit -> set connected field on submit and set it’s value to something

The O365 version of the classic form does not allow you to lookup lists on different sites. This is very restrictive

Like mentioned in this user voice: https://nintex.uservoice.com/forums/218293-4-nintex-forms-for-office-365/suggestions/19051840-improve-form-load-speed-in-o365, the loading speed for new responsive forms is not fast enough.
In the meantime, it would be good to display a loading icon or text like "Form loading, please wait" to not confuse users who want to use the form.

It would be good if you could either set the collapse functionality to collapsed by default and or apply a rule in the rules engine to collapse a group automatically.

Currently we can only see how many Forms licenses are used in the customer portal. For workflows we can see where they are with Hawkeye. For Forms we are flying blind and have no way of identifying where the license usage is going/coming from or the miss use of Forms Licenses. Currently it's an unconrolable cost with no visibility of where the cost is coming from nor do we know what we need to support unless someone tells the SharePoint Team.

When having Repeating section in List Form and then try to display this repeating section in the Nintex Task Form, the repeating section data is not populated in the Task Form (New Responsive Form)

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This is to build a single corporate branding style for all forms on the tenant.

It’s great in the new responsive designer and pages. It would be even more power full if you could apply rules from the rules engine to pages example if this is ticked show page or if this is or isn’t ticket hide page

In the Image Control the Image URL doesn't allow to use any Named Controls. It would be helpful if you can add Named Controls to the Image URL. This way if you grab a URL from another list you can add it to the Image Control.

it would be great to have a control that integrate and validate any abn entered into a control against valid abns

In the New Responsive Designer when using repeating sections the control name is replaced by a GUID which makes it very difficult to work with the XML in workflow when multiple fields and repeating sections are being used - having the control names brought through in the way that the Responsive Designer used to do would be highly beneficial.

While generating the rule, for look up fields, we can only check if it is filled or blank. But we want to create rules based on the look up value. Please find the screenshot attached.

We have a hyperlink added to a SharePoint page, when clicked, it will open new Nintex form of a document library. We need to prepopulate dropdown value on this Nintex form through passing field value in URL. GetQuerystring functionality works for On prem but, it is not available in Office365.

We can help end users to click on specific hyperlinks to prefill some fields in the new form.

Create a Header control to allow for a background color/image and text overlay. This can also be enabled for all Label controls. Provides an option for corporate branding.

It is extremely difficult to track the license usage for Nintex Forms on Office 365. The XML library also seems inaccurate and tracking the GUID is very cumbersome. I hope that there is a functionality similar to Hawkeye for Nintex Forms coming soon.

Official support for Microsoft Teams by Nintex Forms for Office 365. Currently links in Teams to SharePoint lists with Nintex Forms do not display the Forms - just a blank page. I opened a ticket with Nintex support and was directed here to suggest official support because currently Microsoft Teams are not officially supported by Nintex Forms for Office 365.